So you are saying too hot they stick? Everyone else tells me that Lee aluminum molds need to cast hot. and if cool they wrinkle. So which is it? I have one that wrinkles from 650 all the way up to 900. And also sticks in the same range so that shoots that theory down. I have leemented that mold a half dozen times to no avail also. I ran a full thread on that mold on here with everything I did to it. (https://castboolits.gunloads.com/sho...-will-not-work) Lee admitted the mold is bad and offered a replacement at half price which ended up costing me full price once all the taxes, extra shipping fees, regular shipping fees and anything else they could think to add to it were tacked on. After 25 years or more of praising Lee products they have gotten so bad in their customer service I will never praise them again. And I will not buy anything from them that I can get that does the same job from someone else.